Wood-still retort.



No. 840,753. PATENTED JAN. 8, 1907.

H. COPILOVIGH.

WOOD STILL RETORT.

APPLICATION FILED OOTJS. 1906.

JJIKLLLI UNITED STATES PATENT 1 OFFICE. H EN RY CQPILOVICH, OF HINCKL EY, MINNESOTA.

WOOD-STILL RETORT.

Specification of Letters Patent. Application filed October 13, 1906. Serial m5. 888.791.

Patented Jan. 8, 1967;

- To all whom it may concern:

Be itknown that I, HENRY COPILOVICH, a citizen of the United States, residing at Hinckley, in the county of Pine and State of 5 Minnesota, have invented certain new and useful-1m rovements in Wood-Still Retorts, of which t 0 following is a specification.

This invention relates to Wood-stills; and particularly to the class of stills for extractmg turpentine and other oils, and has special reference to impi'ovement on my Patent No. 814,901, dated arch 13, 1906.

The object of this invention is to rovide in a wood-still means to prevent the urni'ng andthe discoloration of oils during process of extraction and delivery and to lengthen the lifeand utility of the retort-bottoms.

With these and various objects, advantages, and improved results in view the invention consists of the novel construction andarrangement of. parts, and essentially in a retort-bottom thewalls of which form an inclosed chamber'having pipe connections to and from it for circulating a cooling medium in the bottom during the period of turpentine extraction.

I know that it has been proposed to preserve retort-bottoms by constructing them of various materials diflering in character from the body of'the retort, and especially by using a metallic bottom packed with concrete or other similar fillin It has also been roposed to locate a coo ingpi e under the ottom of retorts without dlsc arging the cooling medium into a rece tacle or chamber under the bottom of t e retort; but while such arrangements may prevent to some extent the burning. out of the bottoms they are known to retain heat, andthereby fail in the purpose of this intention.

In the accompanying drawings, formin sonry. The foundation has a concavity 4, in which is seated a-hollow vessel forming a supporting-bottom for the retort. The retort and the latter and the retort are provided with the usual feed-o enmg 6.. The vessel which forms a bottom for the retort comdprises a funnel-shaped top 7, a base 8, joine to the top, which has an annular flange 9 {projecting therefrom, neck 10, 'orming a discharge-opening or tar, outletsfrom the retort. This construction forms an annular chamber 11,in which cold water or other suitable cooling fluid is circulated. .The vessel is provided with an induction-pipe 12, leading into'the chamber near and adischarge-pipe 13, extending its top1 I from t e chamber near the bottom on the opposite side of the} vessel from said inductionpipe. A tar-discharge pipe 14 is coupled to the neck 10 for. the outlet of tar from the retort by way of the funnel shaped top 7 and the sa1d neck. v

' It is obvious that the o enbottom of the retort is held bythe vesse -fl '1ge 9 and supportedby the top of the vessel.

Making reference now to the modification shown in Figs..3 and 4, the vessel is of the same sha e and construction as that already and a central.

describe but in order to direct the cooling fluid more especially against the under side of the top of the vessel which forms the bottom of the retort and which is the most highly-heated portion of the vessel I provide a s iral pipe-coil 15 Within the vessel and lea g from the water-inlet pipe 16 and terminating in a closed end near the center of the vessel. The pipe 15 is provided with apertures 1 7 for spraying the Water in various directions and es ecially against the top of the vessel, fromw 'ch it falls into the vesselchamber 18, whence it is ,carriedpfi by an outlet-pipe 19.

It Wlll be understood that in this class of stills the long period of burning wood necessary for extracting oils therefrom necessarily maintains the bottom of the retort in a highlyheated condition. During said period the heavier oils fall to the bottom, where their usefulness is ordinarily destroyed by burning and discoloration and the retort bottom often burned out; but according to this vention the retort-bottom is constantly cooled, the oils delivered therefrom without IO retort, of a retort-bottom comprising an in- 7 myself to any particular size or material nor to any special means of circulating a cooling fluid through the vessel, as the same may be invention.

varied-in the (practical application of the device Without eparting from the sp1r1t of the Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

v 1 In a wood-still, the combination, w1th a closed chamber having a central neck and adapted to have a cooling fluid discharged thereinto for circulation around the neck, and means for conveying said fluid into and from the chamber.

2. In a wood-still, the combination, with a retort, of a vessel having top, bottom and side walls forming an annular chamber having a central passage, a water-pipe attached to the side wall and discharging into the chamber adjacent its top, and a water-pipe attached to theside wall adjacent the bottom of the chamber, and leading from the latter.

3. In a wood-still, the combination, with a retort, of a vessel having a central neck, top

bottom and side Walls, forming an inclosecl retort, of a retort-bottom having a chamber, a spray-p1 e 111 the chamber, the inductionpipe to w ich the spray-pipe is connected,

and the discharge-pipe connected to the chamber.

In testimony whereof I ailix my signature in presence of two witnesses.

HE'NR Y COPILOVICH.

Witnesses:

WARREN B. Ross, H. B. LYON. 

